Jero

Jero has both a religious fanaticism and callous disregard for life that even Bludgeon would find to be extreme. He has also used that religion to enslave his fellow Titans.

Then he started worshipping Astrotrain. You can see where it went from there.

Fiction

The Transformers cartoon

Jero was a High Priest of the Titan Sky God, whose statue Jero could control. He used his people's beliefs to enslave them, forcing them to offer sacrifices (food, mostly) to appease the god. Then Talaria led a rebellion, and captured Jero. She tried to convince the people that there were nogods. Unfortunately, Cosmos crash landed right in the middle of her insurrection. Then Astrotrain arrived, and convinced the Titans that he was a god. Jero was immediately acclaimed high priest of Astrotrain.

He basically became the overseer of the mine where energy crystals were to be given to the Decepticons, and later tried to sacrifice Talaria for helping the AutobotsJazz and Perceptor. However, Omega Supreme crashed the sacrifice. Knowing that they couldn't defeat Omega, Astrotrain decided to destroy the crystals. Jero was left to "die like the worm you are". He was not seen among the Titans who survived, so he may have actually been the first person to die in this particular section of the multiverse. The God Gambit